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math.gamma() function

content/flux/v0/stdlib/math/gamma.md

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<!------------------------------------------------------------------------------ IMPORTANT: This page was generated from comments in the Flux source code. Any edits made directly to this page will be overwritten the next time the documentation is generated. To make updates to this documentation, update the function comments above the function definition in the Flux source code: https://github.com/influxdata/flux/blob/master/stdlib/math/math.flux#L993-L993 Contributing to Flux: https://github.com/influxdata/flux#contributing Fluxdoc syntax: https://github.com/influxdata/flux/blob/master/docs/fluxdoc.md ------------------------------------------------------------------------------->

math.gamma() returns the gamma function of x.

Function type signature
js
(x: float) => float

{{% caption %}} For more information, see Function type signatures. {{% /caption %}}

Parameters

x

({{< req >}}) Value to operate on.

Examples

Return the gamma function of a value

js
import "math"

math.gamma(x: 2.12)// 1.056821007887572

Use math.gamma in map

js
import "sampledata"
import "math"

sampledata.float()
    |> map(fn: (r) => ({r with _value: math.gamma(x: r._value)}))

{{< expand-wrapper >}} {{% expand "View example input and output" %}}

Input data

_time*tag_value
2021-01-01T00:00:00Zt1-2.18
2021-01-01T00:00:10Zt110.92
2021-01-01T00:00:20Zt17.35
2021-01-01T00:00:30Zt117.53
2021-01-01T00:00:40Zt115.23
2021-01-01T00:00:50Zt14.43
_time*tag_value
2021-01-01T00:00:00Zt219.85
2021-01-01T00:00:10Zt24.97
2021-01-01T00:00:20Zt2-3.75
2021-01-01T00:00:30Zt219.77
2021-01-01T00:00:40Zt213.86
2021-01-01T00:00:50Zt21.86

Output data

_time_value*tag
2021-01-01T00:00:00Z-2.4674191070057323t1
2021-01-01T00:00:10Z3007373.527042938t1
2021-01-01T00:00:20Z1399.634749015074t1
2021-01-01T00:00:30Z93234791408407.83t1
2021-01-01T00:00:40Z161558763355.0403t1
2021-01-01T00:00:50Z10.560583496997582t1
_time_value*tag
2021-01-01T00:00:00Z77953108609300690t2
2021-01-01T00:00:10Z22.94201890526749t2
2021-01-01T00:00:20Z0.26786612886141653t2
2021-01-01T00:00:30Z61513013150171220t2
2021-01-01T00:00:40Z4328485003.951652t2
2021-01-01T00:00:50Z0.9486870416779484t2

{{% /expand %}} {{< /expand-wrapper >}}